Home / 42,280.76-63,421.14-11,115.96

Finding the Fourth Proportional to 42,280.76, 63,421.14 and 11,115.96

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Solution

The fourth proportional to 42,280.76, 63,421.14 and 11,115.96 is: 16,673.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,280.76 : 63,421.14 = 11,115.96 : x
  2. Step 2: Convert to fraction form
    42,280.76/63,421.14 = 11,115.96/x
  3. Step 3: Cross multiply
    42,280.76x = 63,421.14 × 11,115.96
  4. Step 4: Simplify right side
    42,280.76x = 704,986,855.39
  5. Step 5: Solve for x
    x = 704,986,855.39/42,280.76
  6. Step 6: Final answer
    x = 16,673.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.